烧减0.2%,硅99.85%,铝0.073%,铁0.0093%,钙0.0038%,镁0.00116%,钾0.028%,钠0.000026%,钛0.0093%
硅99.95%,铝0.006%,铁0.0053%,镁0.0012%,钙0.009%,钾0.0069%,白度96
硅99.26%,铝0.14%,铁0.26%,钠0.13%
硅99.2%,铝0.37%,铁0.316%
硅99.5%,铁0.05%
40-140目,铁100ppm
4N高纯石英砂,70-140目,硅99.991%,白度93